Sage PDF Viewer (Converter) will not work with Acrobat DC

SUGGESTED

All of a sudden, when I try to view a PDF like an  S/O invoice it will not open in Acrobat DC.  If I change the default PDF viewer to Soda PDF it opens fine.  I have uninstalled the converter and re-installed it, but same results.  other machines work fine (as far as I know).

Any suggestions, besides only use Soda PDF?  I like Acrobat DC better.